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Journal articles on the topic 'Heterogeneous polymer systems'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

FUKUMORI, Kenzo. "Materials Technology for Heterogeneous Polymer Systems :." NIPPON GOMU KYOKAISHI 95, no. 9 (2022): 281–88. http://dx.doi.org/10.2324/gomu.95.281.

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2

Turik, A. V., L. A. Reznitchenko, A. I. Chernobabov, G. S. Radchenko, S. A. Turik, and M. G. Radchenko. "Elastic Constants Relaxation in Disordered Heterogeneous Systems." Solid State Phenomena 115 (August 2006): 215–20. http://dx.doi.org/10.4028/www.scientific.net/ssp.115.215.

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Using self-consistent effective-medium theory, we studied the complex elastic compliances of conducting disordered heterogeneous piezoelectric-polymer systems. The considered system is a random mixture of piezoelectric spheroids and polymer ones with the same orientation. The proximate cause of the effective elastic constants frequency dependencies was considered. The nature of the obtained spectra was analyzed.

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Kurbanov, M. A., Sh M. Ahadzade, I. S. Ramazanova, Z. A. Dadashov, and I. A. Faradzhzade. "Varistor effect in highly heterogeneous polymer–ZnO systems." Semiconductors 51, no. 7 (2017): 953–58. http://dx.doi.org/10.1134/s1063782617070223.

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4

Placke, P., R. Richert, and E. W. Fischer. "Rheodielectric spectroscopy on heterogeneous polymer systems ?electrorheological fluids." Colloid & Polymer Science 273, no. 9 (1995): 848–56. http://dx.doi.org/10.1007/bf00657634.

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5

Alam, Todd M., Joshua P. Allers, and Brad H. Jones. "Heterogeneous Polymer Dynamics Explored Using Static 1H NMR Spectra." International Journal of Molecular Sciences 21, no. 15 (2020): 5176. http://dx.doi.org/10.3390/ijms21155176.

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NMR spectroscopy continues to provide important molecular level details of dynamics in different polymer materials, ranging from rubbers to highly crosslinked composites. It has been argued that thermoset polymers containing dynamic and chemical heterogeneities can be fully cured at temperatures well below the final glass transition temperature (Tg). In this paper, we described the use of static solid-state 1H NMR spectroscopy to measure the activation of different chain dynamics as a function of temperature. Near Tg, increasing polymer segmental chain fluctuations lead to dynamic averaging of

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6

Zheng, Y., D. Bhatt, F. B. Dias, et al. "Conductivity of novel, thin-film, heterogeneous polymer electolyte systems." Supramolecular Science 4, no. 3-4 (1997): 525–28. http://dx.doi.org/10.1016/s0968-5677(97)00058-8.

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7

Beloshenko, V. A., V. N. Varyukhin, and A. P. Borzenko. "The Shape Memory Effect in Structurally Heterogeneous Polymer Systems." High Pressure Research 22, no. 3-4 (2002): 589–93. http://dx.doi.org/10.1080/08957950212416.

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8

FUKUMORI, Kenzo. "Materials Technology for Heterogeneous Polymer Systems: Part III. Material Recycling of Crosslinked Polymers." NIPPON GOMU KYOKAISHI 96, no. 7 (2023): 192–98. http://dx.doi.org/10.2324/gomu.96.192.

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9

Al-delfi, Ali, and Faleh H. M. Al-Mahdawi. "Polyacrylamide Polymer Gel Systems for Conformance Control Technology: A Review." Iraqi Journal of Chemical and Petroleum Engineering 23, no. 3 (2022): 75–83. http://dx.doi.org/10.31699/ijcpe.2022.3.10.

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Low oil extraction and early high water production are caused in part by reservoir heterogeneity. Huge quantities of water production are prevalent issues that happen in older reservoirs. Polyacrylamide polymer gel systems have been frequently employed as plugging agents in heterogeneous reservoirs to regulate water output and increase sweep efficiency. Polyacrylamide polymer gel systems are classified into three classes depending on their composition and application conditions, which are in-situ monomer gel, in-situ polymer gel, and preformed particle gel (PPG). This paper gives a comprehensi

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10

Kneidinger, Christian, Erik Schroecker, Gernot Zitzenbacher, and Jürgen Miethlinger. "Melting Behavior of Heterogeneous Polymer Bulk Solids Related to Flood Fed Single Screw Extruders." Polymers 12, no. 12 (2020): 2893. http://dx.doi.org/10.3390/polym12122893.

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Melting models for flood fed single screw extruders, like the Tadmor model, describe the melting of pure thermoplastic polymers. However, the melting behavior of heterogenous polymer systems is of great interest for recycling issues, for example. In this work, the melting of polymer mixtures and that of pure bulk polymers by the drag induced melt removal principle is examined both theoretically and experimentally. The applied model experiments represent the melting of the solid bed at the barrel in single screw extruders. As polymer pellet mixtures, polypropylene-homopolymer mixed with polypro

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11

Surtchev, Marko, Mark Wall, and Sergei Magonov. "Combined AFM/Raman Studies of Heterogeneous Polymer Materials." MRS Advances 1, no. 25 (2016): 1859–64. http://dx.doi.org/10.1557/adv.2016.412.

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ABSTRACTCompositional imaging of several immiscible polymer blends was examined with the combination of AFM-based mechanical and electric modes with chemically-specific Raman mapping. Results showed that these methods substantially complement each other in comprehensive characterization of surface morphology by helping to identify a composition of top surface and sub-surface materials in polymer heterogeneous systems.

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12

Kylián, Ondřej, Artem Shelemin, Pavel Solař, et al. "Magnetron Sputtering of Polymeric Targets: From Thin Films to Heterogeneous Metal/Plasma Polymer Nanoparticles." Materials 12, no. 15 (2019): 2366. http://dx.doi.org/10.3390/ma12152366.

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Magnetron sputtering is a well-known technique that is commonly used for the deposition of thin compact films. However, as was shown in the 1990s, when sputtering is performed at pressures high enough to trigger volume nucleation/condensation of the supersaturated vapor generated by the magnetron, various kinds of nanoparticles may also be produced. This finding gave rise to the rapid development of magnetron-based gas aggregation sources. Such systems were successfully used for the production of single material nanoparticles from metals, metal oxides, and plasma polymers. In addition, the gro

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13

Osako, Takao, Yoichi M. A. Yamada, and Yasuhiro Uozumi. "Application of Heterogeneous Polymer-Supported Catalysts to Continuous Flow Systems." Journal of Synthetic Organic Chemistry, Japan 74, no. 6 (2016): 621–30. http://dx.doi.org/10.5059/yukigoseikyokaishi.74.621.

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14

Pukánszky, Béla, and Frans H. J. Maurer. "Composition dependence of the fracture toughness of heterogeneous polymer systems." Polymer 36, no. 8 (1995): 1617–25. http://dx.doi.org/10.1016/0032-3861(95)99007-h.

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15

Ellis, G., C. Marco, M. A. Gómez, E. P. Collar, and J. Ma García‐Martínez. "The Study of Heterogeneous Polymer Systems by Synchrotron Infrared Microscopy." Journal of Macromolecular Science, Part B 43, no. 1 (2004): 253–66. http://dx.doi.org/10.1081/mb-120027762.

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16

Li, Yongjin, Chuanrong Liu, and Weijun Yang. "Synthesis of porous polymeric metalloporphyrins for highly efficient oxidation of cyclohexane in heterogeneous systems." New Journal of Chemistry 41, no. 16 (2017): 8214–21. http://dx.doi.org/10.1039/c7nj00564d.

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17

Markwort, Lars, Bert Kip, Edouard Da Silva, and Bernard Roussel. "Raman Imaging of Heterogeneous Polymers: A Comparison of Global versus Point Illumination." Applied Spectroscopy 49, no. 10 (1995): 1411–30. http://dx.doi.org/10.1366/0003702953965452.

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Two alternative methods of Raman imaging, via global (wide-field) illumination and via point illumination in combination with confocal light collection, have been applied to the study of heterogeneous polymer systems. From the results obtained it becomes apparent that the fluorescence inherent to most polymer systems severely limits the use of global illumination. Furthermore, the lack in depth resolution in Raman imaging by global illumination ruled out this method for the study of bulk polymer samples. Also as a consequence of the absence of depth resolution, the global illumination techniqu

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18

Pi, Yanfu, Jinxin Liu, Ruibo Cao, et al. "Visualized Study on a New Preformed Particle Gels (PPG)+ Polymer System to Enhance Oil Recovery by Oil Saturation Monitoring Online Flooding Experiment." Gels 9, no. 2 (2023): 81. http://dx.doi.org/10.3390/gels9020081.

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After tertiary recovery from the oilfields, improving the production of the remaining hydrocarbon is always challenging. To significantly improve oil recovery, a heterogeneous composite flooding system has been developed with preformed particle gels (PPG) and polymers according to the technical approach of plugging and flooding combination. In addition, an oil saturation monitoring device and a large-scale 3D physical model were designed to better evaluate the performance of the technique. The evaluation results show that the viscosity, stability, and elasticity of the heterogeneous composite

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19

Kawai, Kiyoshi, and Yoshio Hagura. "Discontinuous and heterogeneous glass transition behavior of carbohydrate polymer–plasticizer systems." Carbohydrate Polymers 89, no. 3 (2012): 836–41. http://dx.doi.org/10.1016/j.carbpol.2012.04.018.

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20

Markwort, Lars, and Bert Kip. "Micro-Raman imaging of heterogeneous polymer systems: General applications and limitations." Journal of Applied Polymer Science 61, no. 2 (1996): 231–54. http://dx.doi.org/10.1002/(sici)1097-4628(19960711)61:2<231::aid-app6>3.0.co;2-q.

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21

Hasnain, Ali, Vinothkumar Ganesan та Sungho Yoon. "Advances in Catalyst Design for β-Lactone Formation via Ring-Expansion Carbonylation". Molecules 30, № 7 (2025): 1399. https://doi.org/10.3390/molecules30071399.

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Over the past three decades, β-lactones have emerged as valuable intermediates for producing diverse industrial chemicals and biodegradable polymers. The ring-expansion carbonylation (REC) of epoxides has become an atom-economical and direct approach to β-lactone production, leveraging readily available carbon monoxide and epoxides. While homogeneous catalysts, particularly bimetallic [Lewis acid]+[Lewis base]−-type systems, have demonstrated exceptional activity and selectivity, issues like recycling and separation limit the industrial scalability. Heterogenized catalysts offer advantages suc

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22

Копылов, А. С., В. И. Юсупов, А. В. Черкасова, И. В. Шершнев, П. С. Тимашев, and А. Б. Соловьева. "FEATURES OF DISTRIBUTION OF PHOTOACTIVE FILLERS IN POLYMERIC MATRIXES OF DIFFERENT NATURE AT THEIR IMPREGNATION IN THE MEDIUM OF SUPERCRITICAL CARBON DIOXIDE." Сверхкритические Флюиды: Теория и Практика 13, no. 2(2) (2020): 56–68. http://dx.doi.org/10.34984/scftp.2018.13.2.006.

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Методом флуоресцентной микроскопии изучено распределение фотоактивных соединений (ФАС) в полимерных матрицах, импрегнированных в среде сверхкритического диоксида углерода (СК-С0). Показано, что характер распределения ФАС в полимерах зависит от природы матрицы, степени взаимодействия вводимых молекул ФАС с фрагментами полимера, соответствующих коэффициентов диффузии. Такая информация может оказаться востребованной при разработках функционально ориентированных полимерных систем, импрегнированных ФАС (гетерогенный катализ, фотохромные материалы, медицина). Fluorescence microscopy was used to stud

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23

Kungurtsev, Yurii E., and Valentina G. Ponomareva. "Proton conductivity of modified polymeric membranes based on CsH₂PO₄." Electrochemical Energetics 24, no. 4 (2024): 227–31. https://doi.org/10.18500/1608-4039-2024-24-4-227-231.

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Comparative data on the effect of the heterogeneous nanodiamond additive on the protonconducting properties of polymer three-phase systems (CsH2PO4/fluoropolymer/nanodiamond) were obtained. Ultradispersed polytetrafluoroethylene and fluoroplast-42 (F-42) were used as fluoropolymers. It was shown that the introduction of small nanodiamond additives ( fv = 0.6 vol.%) into the polymer electrolytes led to an increase in the superionic conductivity of hybrid systems due to the dispersion of salt, its partial amorphization and the more uniform distribution.

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24

Das, Diparjun, Gunindra Pathak, and Lalthazuala Rokhum. "Polymer supported DMAP: an easily recyclable organocatalyst for highly atom-economical Henry reaction under solvent-free conditions." RSC Advances 6, no. 106 (2016): 104154–63. http://dx.doi.org/10.1039/c6ra23696k.

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Polymer supported catalysts are regarded as a borderline class of catalysts, which retains the advantages of homogeneous catalysts while securing the ease of recovery by simple filtration and workup of heterogeneous systems.

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25

Wöhrle, Dieter, Olga Suvorova, Robert Gerdes, et al. "Efficient oxidations and photooxidations with molecular oxygen using metal phthalocyanines as catalysts and photocatalysts." Journal of Porphyrins and Phthalocyanines 08, no. 08 (2004): 1020–41. http://dx.doi.org/10.1142/s1088424604000398.

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Metal phthalocyanines can be very efficient as catalysts and photocatalysts in oxidation reactions using molecular oxygen as oxidant. Different types of soluble low molecular weight or oligomeric and insoluble heterogeneous catalysts and photocatalysts were developed. The heterogeneous metal phthalocyanines exist either impregnated on SiO 2, Al 2 O 3, charcoal and TiO 2 or covalently and coordinatively bound on SiO 2 and organic polymers or ionically bound on an organic ion exchanger. The catalytic oxidations of toxic sulfide and thiol derivative are studied. In addition, toxic phenols were em

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26

Min, Hyemin, Hiroyuki Miyamura, Tomohiro Yasukawa, and Shū Kobayashi. "Heterogeneous Rh and Rh/Ag bimetallic nanoparticle catalysts immobilized on chiral polymers." Chemical Science 10, no. 32 (2019): 7619–26. http://dx.doi.org/10.1039/c9sc02670c.

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We have developed novel heterogeneous chiral Rh and Rh/Ag NP catalysts immobilized on a chiral diene-containing polymer. The catalysts showed high activity in asymmetric reactions in both batch and flow systems.

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27

Babkina, N. V., Yu S. Lipatov, T. T. Alekseeva, and N. V. Yarovaya. "Evolution of the structure and phase state in nonequilibrium heterogeneous polymer systems." Polymer Science Series A 51, no. 8 (2009): 904–11. http://dx.doi.org/10.1134/s0965545x09080094.

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28

Burguete, M. I., J. M. Fraile, E. García-Verdugo, S. V. Luis, V. Martínez-Merino, and J. A. Mayoral. "Polymer-Supported Bis(oxazolines) and Related Systems: Toward New Heterogeneous Enantioselective Catalysts." Industrial & Engineering Chemistry Research 44, no. 23 (2005): 8580–87. http://dx.doi.org/10.1021/ie0488288.

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29

Holoubek, Jaroslav, Ji?� Kotek, and Miroskav Raab. "Light scattering by optically heterogeneous polymer systems: stress whitening in polypropylene materials." Polymer Bulletin 37, no. 5 (1996): 631–38. http://dx.doi.org/10.1007/bf00296609.

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30

Pelster, Andreas, Martin Körsgen, Takako Kurosawa, Hiromi Morita, and Heinrich F. Arlinghaus. "ToF-SIMS and Laser-SNMS Imaging of Heterogeneous Topographically Complex Polymer Systems." Analytical Chemistry 88, no. 19 (2016): 9638–46. http://dx.doi.org/10.1021/acs.analchem.6b02415.

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31

BENAWRA, J., A. M. DONALD, and M. SHANNON. "Developing dual-beam methodologies for the study of heterogeneous polymer-based systems." Journal of Microscopy 234, no. 1 (2009): 89–94. http://dx.doi.org/10.1111/j.1365-2818.2009.03151.x.

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32

Elbakyan, Lusine, Irina Zaporotskova, and David Hayrapetyan. "Nanocomposite Material Based on Polyvinyl Alcohol Modified with Carbon Nanotubes: Mechanism of Formation and Electronic Energy Structure." Journal of Composites Science 8, no. 2 (2024): 54. http://dx.doi.org/10.3390/jcs8020054.

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The physical chemistry of surface phenomena in polymers is an important issue when studying the interaction of polymers with solid surfaces. This is due to the fact that most of the modern polymer materials are heterogeneous systems with highly developed phase separation surfaces. An example of such materials can be reinforced plastic, filled thermoplastics, reinforced rubber, paint coatings, etc. Polymer adsorption at the boundary of the phase separation process in solids plays an important role in the reinforcing effect of fillers, adhesion, gluing and obtaining composite materials with high

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33

Sarmah, Abhishek, Ahmed Farid Ibrahim, Hisham Nasr-El-Din, and Jennifer Jackson. "A New Cationic Polymer System That Improves Acid Diversion in Heterogeneous Carbonate Reservoirs." SPE Journal 25, no. 05 (2020): 2281–95. http://dx.doi.org/10.2118/194647-pa.

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Summary In-situ gelled acids are used for acid diversion in heterogeneous carbonate reservoirs. However, most of the gelled systems are based on anionic polymers that are difficult to clean up after the acid treatments. Residual polymer deposition leads to formation damage by blocking pore throats in the matrix. This work evaluates a new cationic-polymer acid system with self-breaking ability for application as an acid diverter in carbonate reservoirs. Experimental studies have been conducted to examine the rheological properties of these polymer-based acid systems. The apparent viscosities of

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34

Sui, Yingfei, Chuanzhi Cui, Yidan Wang, Shuiqingshan Lu, and Yin Qian. "Displacement Mechanism and Flow Characteristics of Polymer Particle Dispersion System Based on Capillary Bundle Model." International Journal of Energy Research 2024 (May 3, 2024): 1–11. http://dx.doi.org/10.1155/2024/4550335.

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During the development of oil reservoirs, a rapid increase in water cut following reservoir flooding leads to inefficient or ineffective circulation of injected water, rendering a significant portion of the remaining oil in the reservoir inaccessible. The displacement method using polymer particle dispersion systems effectively solves the issue of rapid water breakthrough in oil reservoirs. Owing to the particle phase separation phenomenon, polymer particles can selectively penetrate into the larger pores where water circulation is inefficient, enhance their flow resistance, and thereby achiev

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35

Раупов, И. Р., Ю. А. Сытник, Д. В. Ильин, И. Н. Пягай та М. А. Зубакина. "Разработка седиментационно-устойчивого полимерного состава на основе промышленного отхода". Нефтяная провинция, № 1(41) (30 березня 2025): 204–26. https://doi.org/10.25689/np.2025.1.204-226.

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В данной статье представлены результаты исследования седиментационной устойчивости полимер-дисперсных систем (ПДС) на основе полимеров акрилового ряда и отхода химической промышленности, разрабатываемых для регулирования фильтрационных потоков в неоднородных терригенных коллекторах и повышения коэффициента охвата заводнением. Целью работы является определение наиболее стабильной во времени полимер-дисперсной системы. В рамках экспериментов выполнены следующие задачи: перевод техногенного отхода в нетоксичный вид и измельчение до порошкообразного состояния; приготовление водных растворов полиме

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36

Lee, Kun Sang. "Simulation of Polymer Flood Processes in Heterogeneous Layered Systems with Crossflow and Adsorption." Journal of the Japan Petroleum Institute 52, no. 4 (2009): 190–97. http://dx.doi.org/10.1627/jpi.52.190.

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37

Brus, Jiri, and Martina Urbanova. "Selective Measurement of Heteronuclear1H−13C Dipolar Couplings in Motionally Heterogeneous Semicrystalline Polymer Systems." Journal of Physical Chemistry A 109, no. 23 (2005): 5050–54. http://dx.doi.org/10.1021/jp0503821.

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38

Geppi, Marco, Robin K. Harris, Alan M. Kenwright, and Barry J. Say. "A method for analysing proton NMR relaxation data from motionally heterogeneous polymer systems." Solid State Nuclear Magnetic Resonance 12, no. 1 (1998): 15–20. http://dx.doi.org/10.1016/s0926-2040(98)00046-0.

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39

Popova, E. D., N. N. Avdeev, and A. E. Chalych. "Concentration distribution of elements in heterogeneous polymer systems determined by electron microprobe analysis." Journal of Polymer Science: Polymer Physics Edition 23, no. 8 (1985): 1485–94. http://dx.doi.org/10.1002/pol.1985.180230802.

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40

An Huy, Trinh, Rameshwar Adhikari, Goerg Hannes Michler, and Hans-Joachim Radusch. "Characterization of deformation behavior of heterogeneous polymer systems using spectroscopic and microscopic methods." Macromolecular Symposia 184, no. 1 (2002): 153–74. http://dx.doi.org/10.1002/1521-3900(200208)184:1<153::aid-masy153>3.0.co;2-t.

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41

Münstedt, Helmut. "Rheological Measurements and Structural Analysis of Polymeric Materials." Polymers 13, no. 7 (2021): 1123. http://dx.doi.org/10.3390/polym13071123.

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Rheological measurements of polymer melts are widely used for quality control and the optimization of processing. Another interesting field of rheology is to provide information about molecular parameters of polymers and the structure build-up in heterogeneous polymeric systems. This paper gives an overview of the influence of molar mass, molar mass distribution and long-chain branching on various rheological characteristics and describes the analytical power following from established relations. With respect to applications, we discuss how rheological measurements can be used to gain insight

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42

Šolc, Karel, and Ronald Koningsveld. "Liquid-Liquid Phase Separation in Multicomponent Polymer Systems. XXVI. Blends of Two Polydisperse Polymers." Collection of Czechoslovak Chemical Communications 60, no. 10 (1995): 1689–718. http://dx.doi.org/10.1135/cccc19951689.

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A method for computing phase diagrams of polydisperse A/B polymer blends is proposed, based on Flory-Huggins-Staverman thermodynamics, and employed to obtain cloud-point curves (CPCs), shadow curves, spinodals and coexistence curves for a series of systems. Often bimodal CPCs and shadow curves result, even for systems with a concentration-independent interaction parameter g. The importance of coexistence curves, as opposed to CPCs, for judging the A/B miscibility, recently observed in polydisperse blends, is confirmed in this study. Particular attention is here paid to the critical state. Anal

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43

Tian, Wenchao, Xuyang Chen, Guoguang Zhang, Yuanming Chen, and Jijun Luo. "Delamination of Plasticized Devices in Dynamic Service Environments." Micromachines 15, no. 3 (2024): 376. http://dx.doi.org/10.3390/mi15030376.

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With the continuous development of advanced packaging technology in heterogeneous semiconductor integration, the delamination failure problem in a dynamic service environment has gradually become a key factor limiting the reliability of packaging devices. In this paper, the delamination failure mechanism of polymer-based packaging devices is clarified by summarizing the relevant literature and the latest research solutions are proposed. The results show that, at the microscopic scale, thermal stress and moisture damage are still the two main mechanisms of two-phase interface failure of encapsu

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44

Kizhnyaev, Valery N., Fedor A. Pokatilov, Alexey I. Shabalin, and Roman G. Zhitov. "Conetworks on the base of polystyrene with poly(methyl methacrylate) paired polymers." e-Polymers 19, no. 1 (2019): 421–29. http://dx.doi.org/10.1515/epoly-2019-0043.

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AbstractIt is found that forced (reactive) blending of polystyrene (PS) with polymethylmethacrylate (PMMA) involves the covalent binding of heterogeneous macromolecules to afford the paired polymers. For this purpose, the “anchor” N-H unsubstituted tetrazole or oxirane functional groups are preliminarily introduced in the structure of both polymers in a small amount that leads to a covalent binding of the heterogeneous macromolecules. The reaction between the modified PS and PMMA is carried out in dimethylformamide (DMF), toluene and dichloroethane (DCE) at a high total concentration of polyme

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45

Biswas, Kinkar, Sujit Ghosh, and Basudeb Basu. "Ion-exchange Resins and Polypeptide Supported Catalysts: A Critical Review." Current Green Chemistry 7, no. 1 (2020): 40–52. http://dx.doi.org/10.2174/2213346107666200204125435.

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Heterogeneous catalysis represents one of the important areas in the field of organic synthesis. Major developments have been emerged during last few decades and polymer-supported catalysts have been employed successfully in various catalytic organic transformations. Ion-exchange resins and polypeptides are two important examples of such heterogeneous polymer-supported catalysts among others because of their easy accessibility, stability, recoverability and reusability. Cross-linked ion-exchange resins and polypeptides are highly insoluble, which make them better choice in terms of their easy

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46

Grafova, Iryna A., Andrei V. Grafov, Umberto Costantino, Fabio Marmottini, and Marcos L. Dias. "Layered Double Hydroxides as Supports for Norbornene Addition Polymerisation Catalysts." Zeitschrift für Naturforschung B 58, no. 11 (2003): 1069–74. http://dx.doi.org/10.1515/znb-2003-1106.

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Abstract Addition polymerisation of norbornene with transition metal catalysts activated by methylaluminoxane was first realised on heterogeneous catalytic systems. Advanced inorganic functional polymers possessing anion-exchange properties - layered double hydroxides of Al and Zn of hydrotalcitetype - were applied as supports. They possess high polarity and are selective towards polar molecules like organometallic compounds. The activity of immobilised nickel catalysts was found to be higher than that of the homogeneous one. A certain catalytic activity was also found for group 4 phthalocyani

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Baldwin, Daniel F., Minuro Shimbo, and Nam P. Suh. "The Role of Gas Dissolution and Induced Crystallization During Microcellular Polymer Processing: A Study of Poly (Ethylene Terephthalate) and Carbon Dioxide Systems." Journal of Engineering Materials and Technology 117, no. 1 (1995): 62–74. http://dx.doi.org/10.1115/1.2804373.

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One of the critical steps in the production of microcellular polymers is the dissolution of gas into a polymer matrix. In this paper, the formation of a gas and semi-crystalline thermoplastic solution is studied in the presence of a crystallizing matrix with particular emphasis on the ultimate effects of crystallinity on microcellular polymer processing. In this particular study, carbon dioxide was selected as the gas and poly (ethylene terephthalate) (PET) as the polymer. Polymer/gas solution formation is the precursor to the microvoid nucleation and growth during microcellular polymer proces

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48

Mokshina, Nadezhda Ya, Oksana A. Pakhomova, Gennadiy V. Shatalov, and Maria S. Lavlinskaya. "EXTRACTION AND ELECTROPHORETIC DETERMINATION OF VANILLIN IN AQUEOUS SOLUTIONS AND ENERGY DRINKS WITH POLYMERS BASED ON N-VINILFORMAMIDE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 8 (2017): 13. http://dx.doi.org/10.6060/tcct.2017608.5577.

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The problem of development of new ways of extraction of vanillin from aqueous mediums of various genesis for the analysis and determination of an anolyte under production of foodstuff and energy drinks was actualized. Two-phase water systems on the basis of water-soluble polymers most fully satisfy requirements for extractive systems. Regularities of interphase distribution of vanillin in a water-salt extraction systems on the basis of poly-N-vinylformamide and N-vinilformamide copolymer with N-vinylimidazole are established. The rate of formation of the two-phase system "water-soluble polymer

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Chepurnaya, Irina A., Mikhail P. Karushev, Elena V. Alekseeva, Daniil A. Lukyanov, and Oleg V. Levin. "Redox-conducting polymers based on metal-salen complexes for energy storage applications." Pure and Applied Chemistry 92, no. 8 (2020): 1239–58. http://dx.doi.org/10.1515/pac-2019-1218.

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AbstractMetal-salen polymers are electrochemically active metallopolymers functionalized with multiple redox centers, with a potential for high performance in various fields such as heterogeneous catalysis, chemical sensors, energy conversion, saving, and storage. In light of the growing world demand for the development of superior energy storage systems, the prospects of employing these polymers for advancing the performance of supercapacitors and lithium-ion batteries are particularly interesting. This article provides a general overview of the results of investigating key structure-property

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Kosynchuk, Liudmyla, Oksana Antonenko, Volodymyr Grishchenko, Nataliia Busko, Taisa Ignatova, and Liubov Vorontsova. "EFFECT OF AZOINITIATORS OF METHYL METHACRYLATE POLYMERIZATION ON THE FORMATION PROCESS AND MORFOLOGY OF POLYURETHANE /POLYMETHYL METHACRYLATE INTERPENETRATING POLYMER NETWORKS." Ukrainian Chemistry Journal 86, no. 9 (2020): 39–54. http://dx.doi.org/10.33609/2708-129x.86.9.2020.39-54.

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Interpenetrating polymer networks (IPN) are mixtures of two cross-linked polymers formed as a result of chemical reactions of in situ synthesis of components from single-phase initial mixtures. As a rule, due to the incompatibility of the components, a physical process of phase separation takes place with the formation of heterogeneous systems with insignificant interphase adhesion, which can have a negative effect on the physicochemical properties. To increase the compatibility of the components and to stabilize the systems, compatibilizers are introduced into the reaction mixtures. In this w

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